🩻 Ovarian-Adnexal O-RADS (US) Risk Stratification
Look up the malignancy risk and management for an ACR O-RADS US ovarian-adnexal category (0–5). Instant, browser-side.
Ovarian-Adnexal O-RADS (US) Risk Stratification
O-RADS US category
When to use
Translate an O-RADS US category into a follow-up, MRI or gyn-oncology pathway.
How it works
1 normal (0%), 2 almost certainly benign (< 1%), 3 low (1–< 10%), 4 intermediate (10–< 50%), 5 high (≥ 50%) risk of malignancy.
Key points
- O-RADS 3 with a solid lesion still warrants MRI characterisation.
- O-RADS 4 → MRI or gynaecology evaluation; consider CA-125.
- O-RADS 5 (irregular solid, high colour score, ascites/peritoneal nodules) → gyn-oncology referral.
- Categories follow the US lexicon (lesion type, solid component, colour score).
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.